Julian day

Giuseppe Romano · com.aiuspaktyn.giuliano

5.0 out of 5 (1 rating) 320 downloads v1.0.5 3 MB Android 4.1+ PEGI 3 · Everyone

Download APK 3 MB All versions

At a glance

Latest version: v1.0.5 (5)
Updated: Sep 16, 2025 (1 year ago)
APK size: 3 MB
Requires: Android 4.1+ (API 16)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Aug 17, 2019 (at least)
Permissions: 6
Website: aiuspaktyn.github.io
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Julian day is an app by Giuseppe Romano in the Tools category, listed since at least August 2019. It has no native code, so it runs on any Android processor.

It asks for 6 permissions, none of them sensitive.

What's new in v1.0.5

• Android Oreo • Samsung S8 • Chromebook • Samsung Multi Window • LG Split Window

Description

From the listing uploaded by “catappult”.

JDs are the recommended way how to specify time in astronomy. The Julian day or Julian day number (JDN) is the integer number of days that have elapsed since noon Greenwich Mean Time Monday, January 1, 4713 BC. The Julian Date (JD) is the number of days (with decimal fraction of the day) that have elapsed since the same epoch. The Julian day number can be considered a very simple calendar, where its calendar date is just an integer, and time is its fraction. This is useful for reference, computations, and conversions. The beauty of JD lays in the fact that it is easy to calculate time ranges and to roll dates, since just basic math operations addition and subtraction are used. JD allows the time between any two dates in history to be computed by simple subtraction. The Julian day system was introduced by astronomers to provide a single system of dates that could be used when working with different calendars and to unify different historical chronologies.

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Giuseppe Romano” The developer's name — though anyone can put any name in a certificate.

Store checks and file details

Developer signature verified Jun 8, 2020
Antivirus scan passed Sep 28, 2020
Signed byCN=Giuseppe Romano, L=Pomigliano d'Arco, ST=Napoli, C=IT
Signing certificate (SHA-1)2C:17:49:42:AD:F3:22:20:46:D0:89:E5:D7:46:6C:50:D0:B3:BE:5A
File MD5ed3e63cd01da8883d6ad1cf07c53031c
Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (6)

Julian day requests 6 permissions, none of them sensitive.

Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Portrait screen android.hardware.screen.portrait

Julian day APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Julian day APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is ed3e63cd01da8883d6ad1cf07c53031c.