wareki
Convert Japanese Era and Gregorian Dates
Japanese era dates can be confusing when an era changes during a calendar year. This skill applies daily boundaries and arithmetic to convert dates offline.
Install with my Agent
Copy this request to your Agent. It includes the canonical Skill page and manifest.
Review the Skillstore skill "wareki" from https://skillstore.io/skills/tahodev-wareki.md and its manifest at https://skillstore.io/api/skills/tahodev-wareki/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
Agent-readable resources
Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.
Test it
Using "wareki". Convert September 11, 2026, into Japanese era notation.
Expected outcome:
- Gregorian date: September 11, 2026.
- Japanese era date: Reiwa 8, September 11.
- Era year: 2026 minus 2019 plus 1 equals 8.
Using "wareki". Compare January 7 and January 8, 1989.
Expected outcome:
- January 7, 1989: Showa 64, January 7.
- January 8, 1989: Heisei gannen, January 8.
- Heisei began on January 8; gannen denotes its first year.
Using "wareki". Convert Showa 64 June into a Gregorian date.
Expected outcome:
- This Japanese era date does not exist.
- Showa ended on January 7, 1989, so Showa 64 has no June.
- The input is not rounded to a nearby valid date.
Security Audit
SafeAll six static findings are false positives in readable calendar documentation. Backticks mark arithmetic, URLs cite astronomical references, and the parent-directory link points to shared documentation rather than a filesystem operation. No evidence found of prompt injection, executable commands, data exfiltration, or concealed payloads in SKILL.md.
Risk Factors
⚙️ External commands (3)
🌐 Network access (1)
📁 Filesystem access (1)
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APA citation
tahodev. (2026). wareki security audit report (audit version 1) [Author version unspecified]. Skillstore. https://skillstore.io/skills/tahodev-wareki/audits/1BibTeX citation
@techreport{tahodev-tahodev-wareki-2026,
author = {tahodev},
title = {wareki security audit report (audit version 1)},
institution = {Skillstore},
year = {2026},
number = {1},
url = {https://skillstore.io/skills/tahodev-wareki/audits/1},
note = {Author version unspecified}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "wareki security audit report (audit version 1)"
version: "unspecified"
type: report
authors:
- name: "tahodev"
date-released: "2026-10-13"
url: "https://skillstore.io/skills/tahodev-wareki/audits/1"
identifiers:
- type: other
value: "skillstore:tahodev-wareki:audit:1"
description: "Skillstore immutable audit report identifier"
Skillstore Score
Why this score Evidence Confidence: MediumWhat You Can Build
Prepare Japanese forms
Convert a Gregorian birth date into Japanese era notation and show both formats for comparison.
Interpret historical dates
Translate supported era dates into Gregorian dates while noting calendar limitations for early Meiji records.
Check transition examples
Compare dates around the Showa, Heisei, and Reiwa transitions to prepare expected results for calendar tests.
Try These Prompts
Convert September 11, 2026, into Japanese era notation. Show both Gregorian and Japanese era dates.
Convert Heisei 7 into a Gregorian year. Explain the arithmetic and do not invent a month or day.
Convert April 30 and May 1, 2019, into Japanese era dates. Explain the boundary and first-year notation.
Review Showa 64 June, October 22, 1868, and January 1, 1872. Flag invalid or unsupported inputs and explain historical calendar caveats.
Best Practices
- Provide the month and day when converting a Gregorian year that contains an era transition.
- Display Gregorian and Japanese era dates together to reduce transcription errors.
- State the Gregorian basis for early Meiji dates and check historical records for lunisolar notation.
Avoid
- Assigning one era to every date in a Gregorian transition year.
- Rounding impossible era dates into nearby valid dates.
- Guessing dates before the supported range or predicting future era names.
Frequently Asked Questions
Does conversion require internet access?
Which Japanese eras are supported?
What does gannen mean?
Can I provide only a Gregorian year?
Does this convert historical lunisolar dates?
What happens with invalid dates or future era changes?
Developer Details
Author
tahodevLicense
MIT
Skillstore revision
r1
Version notice
The author did not declare a version.
Repository
https://github.com/tahodev/kurashi-skill/tree/09cb7f9eac85f0c85633cce08328a1a57854a94f/warekiRef
7f17813fb6af1acc7d8fd3fb5f05480f5be52783
Maintenance freshness
10/13/2026
Usage
0 downloads · 0 views
File structure
📄 SKILL.md