Śrīmad-Bhāgavatam 5.22.7
అథ చ యావన్నభోమణ్డలం సహ ద్యావాపృథివ్యోర్మణ్డలాభ్యాం కార్త్స్న్యేన స హ భుఞ్జీత తం కాలం సంవత్సరం పరివత్సరమిడావత్సరమనువత్సరం వత్సరమితి భానోర్మాన్ద్యశైఘ్ర్యసమగతిభి: సమామనన్తి ॥ ౭ ॥
atha ca yāvan nabho-maṇḍalaṁ saha dyāv-āpṛthivyor maṇḍalābhyāṁ kārtsnyena sa ha bhuṣjīta taṁ kālaṁ saṁvatsaraṁ parivatsaram iḍāvatsaram anuvatsaraṁ vatsaram iti bhānor māndya-śaighrya-sama-gatibhiḥ samāmananti.
[atha cha yaavan nabho-mandalam saha dyaav-aaprithivyor mandalaabhyaam kaartsnyena sa ha bhushjeeta tam kaalam samvatsaram parivatsaram idaavatsaram anuvatsaram vatsaram iti bhaanor maandya-shaighrya-sama-gatibhih samaamananti.]
Word-for-word
atha
—
now
ca
—
also
yāvat
—
as long as
nabhaḥ-maṇḍalam
—
outer space, between the upper and lower world
saha
—
along with
dyau
—
of the upper world
āpṛthivyoḥ
—
of the lower world
maṇḍalābhyām
—
the spheres
kārtsnyena
—
entirely
saḥ
—
he
ha
—
indeed
bhuṣjīta
—
may pass through
tam
—
that
kālam
—
time
saṁvatsaram
—
Saṁvatsara
parivatsaram
—
Parivatsara
iḍāvatsaram
—
Iḍāvatsara
anuvatsaram
—
Anuvatsara
vatsaram
—
Vatsara
iti
—
thus
bhānoḥ
—
of the sun
māndya
—
slow
śaighrya
—
speedy
sama
—
and equal
gatibhiḥ
—
by the speeds
samāmananti
—
the experienced scholars describe.
Blended reading (Sanskrit + English inline)
atha ca yāvan nabho-maṇḍalaṁ saha dyāv-āpṛthivyor maṇḍalābhyāṁ kārtsnyena sa ha bhuṣjīta taṁ kālaṁ saṁvatsaraṁ parivatsaram iḍāvatsaram anuvatsaraṁ vatsaram iti bhānor māndya-śaighrya-sama-gatibhiḥ samāmananti.
atha
now
ca
also
yāvat
as long as
nabhaḥ-maṇḍalam
outer space, between the upper and lower world
saha
along with
dyau
of the upper world
āpṛthivyoḥ
of the lower world
maṇḍalābhyām
the spheres
kārtsnyena
entirely
saḥ
he
ha
indeed
bhuṣjīta
may pass through
tam
that
kālam
time
saṁvatsaram
Saṁvatsara
parivatsaram
Parivatsara
iḍāvatsaram
Iḍāvatsara
anuvatsaram
Anuvatsara
vatsaram
Vatsara
iti
thus
bhānoḥ
of the sun
māndya
slow
śaighrya
speedy
sama
and equal
gatibhiḥ
by the speeds
samāmananti
the experienced scholars describe.
The sun-god has three speeds — slow, fast and moderate. The time he takes to travel entirely around the spheres of heaven, earth and space at these three speeds is referred to, by learned scholars, by the five names Saṁvatsara, Parivatsara, Iḍāvatsara, Anuvatsara and Vatsara.
Purport
According to solar astronomical calculations, each year extends six days beyond the calendar year, and according to lunar calculations, each year is six days shorter. Therefore, because of the movements of the sun and moon, there is a difference of twelve days between the solar and lunar years. As the Saṁvatsara, Parivatsara, Iḍāvatsara, Anuvatsara and Vatsara pass by, two extra months are added within each five years. This makes a sixth saṁvatsara, but because that saṁvatsara is extra, the solar system is calculated according to the above five names.
— A.C. Bhaktivedanta Swami Prabhupāda
Gauḍīya Ācāryas
Viśvanātha Cakravartī Ṭhākura
Gauḍīya
Translation
The time it takes for the sun to pass completely through the antarikṣa along with earth plane and heavenly planes, with slow, quick and medium speeds, is called saṁvatsara, parivatsara, iḍāvatsa, anuvatsara, and vatsara.
It should be understood that the antariṣka is equal in size to the earthly and heavenly planes surrounding on either side. The different names of the year according to use based on different calculations has been described in the Third Canto (SB 3.11.13).
My note
Source: vedabase.io