| Symbol | Description | Uses |
| IDAY | 36 |
| File | Line number | Procedure | Code |
| ./pkg/fizhi/fizhi_clockstuff.F | 990 | ASTRO |
IDAY = DAY + MNDY(MONTH,MOD(YEAR,4)+1) |
| ./pkg/fizhi/fizhi_clockstuff.F | 991 | ASTRO |
IDAYP1 = MOD( IDAY,DAYSCY) + 1 |
| ./pkg/fizhi/fizhi_clockstuff.F | 992 | ASTRO |
THM = MOD( TH(IDAY) ,TWO*PI) |