सिद्धान्तशिरोमणि: गोलाध्याय (भास्कराचार्य - मरीचि भाष्य एवं पं. केदारदत्त जोशी सविस्तार व्याख्या)

" or "तद्भवदिनं"?
Let's look at the letters after "तदिति ।":
Letter 1: त
Letter 2: द्
Letter 3: भ (bha)?
Wait, let's look at "तद्दिनं":
No, between त and दि:
There is: 'द्' + 'भ'?
Wait, look at line 4: "अथैतद्भूमिकायाऽवगतं" - 'द्भ' looks like 'द्' with 'भ' attached below.
In line 26, is it 'द्' with 'भ'?
Wait, no: look at "तद्दिनं":
Wait, could it be "तद्दिनं"? In line 26:
त (ta)
द् (d)
दि (di)
नं (naṃ)
Wait, why would there be "तद्भवदिनं"?
Wait, look at the letters:
"त"
then: "द्" with "दि" = "द्दि"?
Wait, in Devanagari, 'द्दि' is 'द' with another 'द' below, and 'ि' matra!
Let's look at it:
It's 'त' + 'द्दि' + 'नं' = "तद्दिनं"!
Wait, is there a 'भ'?
No! Look: it's त् + दि = त्दि or द् + दि = द्दि